The energy we require to live comes from the chemically stored potential energy in food, which...

The energy we require to live comes from the chemically stored potential energy in food, which is transformed into other energy forms during the metabolism process. PHS 1120, Principles of Modern Physical Science 3 What consequence awaits a person whose combined work and heat output is less than the energy consumed? What happens when the person's work and heat output is greater than the energy consumed? Can an undernourished person perform extra work without extra food? Discuss and defend your answers. Please write a 5-paragraph essay connecting physical principles with biology. Include your responses to the questions above.

Expert Solution

Conservation of energy implies that the chemical energy stored in food is converted into work, thermal energy or stored as chemical energy in fatty tissue as shown in figure above. Energy consumed by humans is converted to work, thermal energy, and stored fat.

(a) What consequence awaits a person whose combined work and heat output is less than the energy consumed ?

Ans. If a person consumes more energy than his combined work and heat output, then the unexpanded remainder will be deposited at various locations in and around his body in the form of fat cells.

(b) What happens when the person's work and heat output is greater than the energy consumed ?

Ans. When the person outputs more work and heat than the energy in the food he ate, he loses some weight. The energy has to come from somewhere, and one ready source is the energy, he previously stored as fat.

(c) Can an undernourished person perform extra work without extra food ?

Ans. yes, an undernourished person can perform extra work without extra food.

genius_generous answered 1 year ago

In chemical reactions, heat is converted into chemical energy (the potential energy stored in chemical bonds)...

In chemical reactions, heat is converted into chemical energy (the potential energy stored in chemical bonds) or vice versa. Bond energy is the energy required to break one mole of the bond in the gas phase. Since it takes energy to break a bond, bond energies are always positive. Conversely, energy is released when bonds are formed. Thus, the enthalpy change for a reaction can be approximated from ΔHrxn=∑(ΔHbreaking)+∑(ΔHforming) where H represents bond energies for the breaking (positive bond energy)...

How can we obtain energy from food we eat? Where specifically is the energy in foods?

The potential energy stored in the compressed spring of a dart gun, with a spring constant...

The potential energy stored in the compressed spring of a dart gun, with a spring constant of 36.00 N/m, is 1.440 J. Find by how much is the spring is compressed. A 0.070 kg dart is fired straight up. Find the vertical distance the dart travels from its position when the spring is compressed to its highest position. The same dart is now fired horizontally from a height of 4.30 m. The dart remains in contact until the spring reaches...

determine the potential energy stored in a spring if a force of 28 holds the spring...

determine the potential energy stored in a spring if a force of 28 holds the spring and it has a spring constant of 97 N/m compressed. please answer in joules and explain how you solved It. (like dumb it down) so that I could learn. thank you!

Which method(s) of energy transfer does not require matter? Which method(s) of energy transfer does require...

Which method(s) of energy transfer does not require matter? Which method(s) of energy transfer does require matter? Give an example of each

In which portion of a molecule of ATP is chemical energy stored? How does an energy-carrying...

In which portion of a molecule of ATP is chemical energy stored? How does an energy-carrying molecule of ATP persist long enough in a cell to do useful work?

All cells require energy to live. In your assigned reading for this week, you learned how...

All cells require energy to live. In your assigned reading for this week, you learned how cells generate and then utilize that energy through the metabolic process. As our understanding of these mechanisms has improved, we have been able to apply that knowledge for our own benefit. For example, the aerobic and anaerobic respiration processes of various organisms have been harnessed by both the food and drinks companies and the waste/biofuels industries. Also, consider the impact of understanding the cause...

Give examples of changes of energy from potential to kinetic and from kinetic to potential.

Which food groups are often missing from high-calorie, energy-dense diets?

1. A large quantity of chemical energy is stored in a gummy bear, which is primarily...

1. A large quantity of chemical energy is stored in a gummy bear, which is primarily sugar, C12H22O11. When a gummy bear is placed in molten KClO3, the sugar is oxidized according to the following thermochemical equation: C12H22O11(s) + 8 KClO3(l) ⇒ 8 KCl(s) + 12 CO2(g) + 11 H2O(g) ∆Hrxn = −5488 kJ If a gummy bear has an average mass of 0.5250 g and is 91.40% sugar, then how many whole gummy bears does it take to bring...

Question